RM36D0EC _51 Engine / Hybrid System _083048 HYBRID / BATTERY CONTROL _0709511 HYBRID CONTROL SYSTEM J

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  Shut Down Signal Circuit  


DESCRIPTION

The cause of the malfunction may be a shutdown signal.

Check whether there is a shutdown signal +B short circuit.

Related Parts Check
Area Inspection
HSDN terminal Check that the HSDN terminal voltage decreases to check for an open or short circuit while READY off (IG ON).
Hybrid vehicle control ECU assembly, inverter, wire harness Check for open or short circuit in hybrid vehicle control ECU assembly, inverter and wire harness.

SYSTEM DESCRIPTION

Power supply to the motor is cut off due to a shutdown signal sent from the hybrid vehicle control ECU assembly to the motor generator control ECU (MG ECU).

WIRING DIAGRAM

A556771E07
0.615,2.479 1.635,2.667 1.021,0.188 10 false A51*1, A87*2 0.615,2.646 3.208,3.094 2.594,0.448 10 false Inverter with Converter Assembly 2.125,0.74 2.438,0.938 0.313,0.198 10 false +B 2.063,1.073 2.521,1.271 0.458,0.198 10 false +B2 1.958,1.354 2.573,1.552 0.615,0.198 10 false HSDN 1.958,1.771 2.573,1.969 0.615,0.198 10 false GND1 1.948,2.115 2.563,2.313 0.615,0.198 10 false GND2 2.438,0.635 3.167,0.833 0.729,0.198 10 false 6*1, 36*2 2.438,0.979 3.177,1.219 0.74,0.24 10 false 5*1, 35*2 2.417,1.365 3.198,1.615 0.781,0.25 10 false 22*1, 6*2 2.427,1.688 3.156,1.917 0.729,0.229 10 false 24*1, 9*2 2.427,2.021 3.104,2.333 0.677,0.313 10 false 23*1, 8*2 4.76,1.458 5.219,1.656 0.458,0.198 10 false A31 4.844,1.281 5,1.479 0.156,0.198 10 false 9 5.115,1.344 5.729,1.542 0.615,0.198 10 false HSDN 5.125,1.938 5.438,2.135 0.313,0.198 10 false E1 4.771,1.958 5.229,2.156 0.458,0.198 10 false A30 4.792,1.771 5.104,1.969 0.313,0.198 10 false 15 0.688,3.125 2.375,3.323 1.688,0.198 10 false *1: for 2WD 0.688,3.427 2.979,3.625 2.292,0.198 10 false *2: for AWD 4.604,2.771 7.156,3.25 2.552,0.479 10 false Hybrid Vehicle Control ECU Assembly 3.688,0.719 5.677,0.917 1.99,0.198 10 false from PCU Fuse

Refer to the wiring diagram for the ECU power source circuit.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>ECU Power Source Circuit

CAUTION / NOTICE / HINT

This diagnostic procedure is referenced to in the diagnostic procedure of several DTCs.

If the result of this diagnostic procedure is normal, proceed as directed in the procedure for the DTC.

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>PRECAUTION


PROCEDURE

1.CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY
a.

Turn the power switch on (IG).


b.

Measure the voltage according to the value(s) in the table below.

A494160C26
4.688,0.219 5.104,0.469 0.417,0.25 2.427,0.208 2.844,0.458 0.417,0.25 1.896,2.229 2.438,1.25 true 5.875,2.365 5.563,1.385 true 0.271,0.167 0.583,0.323 0.313,0.156 10 false *a 1.594,2.281 2.135,2.479 0.542,0.198 10 false HSDN 5.896,2.406 6.208,2.563 0.313,0.156 10 false E1 2.521,0.271 3.063,0.469 0.542,0.198 10 false A31 4.792,0.281 5.333,0.479 0.542,0.198 10 false A30
*a Component with harness connected
(Hybrid Vehicle Control ECU Assembly) 		- -


Standard Voltage:
Tester Connection Condition Specified Condition
A31-9 (HSDN) - A30-15 (E1) Power switch on (IG) Below 4.5 V



c.

Turn the power switch off.


Result:
Proceed to
OK
NG



OK

SHUTDOWN SIGNAL CIRCUIT NORMAL (PERFORM NEXT STEP FOR REFERENCED DTC)

NG

2.CHECK VEHICLE CONDITION
2.CHECK VEHICLE CONDITION
a.

Check vehicle condition.


Result:
Result Proceed to
for 2WD A
for AWD B



A

3.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INVERTER WITH CONVERTER ASSEMBLY)

B

5.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INVERTER WITH CONVERTER ASSEMBLY)
3.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INVERTER WITH CONVERTER ASSEMBLY)
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Disconnect the A51 inverter with converter assembly connector.


c.

Disconnect the A31 and A30 hybrid vehicle control ECU assembly connector.


d.

Connect the cable to the negative (-) auxiliary battery terminal.


e.

Turn the power switch on (IG).


f.

Measure the voltage according to the value(s) in the table below.

A556793C03
0.792,0.406 1.188,0.635 0.396,0.229 3.021,0.406 3.417,0.635 0.396,0.229 5.573,0.396 5.969,0.625 0.396,0.229 1.115,1.229 1.635,0.76 true 1.208,1.26 1.771,1.771 true 1.01,1.479 1.24,2.146 true 3.51,1.313 4.063,0.813 true 5.615,1.292 6.073,2.073 true 5.646,1.635 5.354,2.063 true 0.219,0.167 0.531,0.365 0.313,0.198 10 false *a 2.26,0.208 2.573,0.406 0.313,0.198 10 false *b 5.677,0.427 6,0.625 0.323,0.198 10 false A30 3.083,0.438 3.406,0.635 0.323,0.198 10 false A31 0.865,0.438 1.188,0.635 0.323,0.198 10 false A51 1.125,2.188 1.604,2.385 0.479,0.198 10 false HSDN 3.979,0.625 4.458,0.823 0.479,0.198 10 false HSDN 5.083,2.104 5.563,2.302 0.479,0.198 10 false MREL 6.021,2.156 6.5,2.354 0.479,0.198 10 false +B1 1.813,1.802 2.292,2 0.479,0.198 10 false +B 1.729,0.688 2.208,0.885 0.479,0.198 10 false +B2
*a Front view of wire harness connector
(to Inverter with Converter Assembly) 		*b Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly)


Standard Voltage:
Tester Connection Condition Specified Condition
A51-22 (HSDN) or A31-9 (HSDN) - Body ground Power switch on (IG) Below 1 V


NOTICE:

Turning the power switch on (IG) with the hybrid vehicle control ECU assembly and inverter with converter assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.



g.

Turn the power switch off.


h.

Disconnect the cable from the negative (-) auxiliary battery terminal.


i.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A51-22 (HSDN) - A51-6 (+B) Power switch off 10 kΩ or higher
A51-22 (HSDN) - A51-5 (+B2) Power switch off 10 kΩ or higher
A31-9 (HSDN) - A30-7 (+B1) Power switch off 10 kΩ or higher
A31-9 (HSDN) - A30-47 (MREL) Power switch off 10 kΩ or higher



j.

Reconnect the A31 and A30 hybrid vehicle control ECU assembly connector.


k.

Reconnect the A51 inverter with converter assembly connector.


Result:
Proceed to
OK
NG



OK

4.CHECK INVERTER WITH CONVERTER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK INVERTER WITH CONVERTER ASSEMBLY
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Disconnect the A51 inverter with converter assembly connector.


c.
A365592C58
0.979,0.854 0.615,0.583 true 0.813,0.917 0.281,1.031 true 1.115,1.323 1.104,1.844 true 0.104,0.083 0.417,0.281 0.313,0.198 10 false *a 0.969,1.875 1.583,2.073 0.615,0.198 10 false HSDN 0.073,0.958 0.385,1.156 0.313,0.198 10 false +B 0.365,0.406 0.823,0.604 0.458,0.198 10 false +B2
*a Component without harness connected
(Inverter with Converter Assembly)


Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
22 (HSDN) - 6 (+B) Power switch off 10 kΩ or higher
22 (HSDN) - 5 (+B2) Power switch off 10 kΩ or higher



d.

Reconnect the A51 inverter with converter assembly connector.


Result:
Proceed to
OK
NG



OK

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


NG

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>INVERTER WITH CONVERTER (for 2WD)>REMOVAL


5.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INVERTER WITH CONVERTER ASSEMBLY)
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Disconnect the A87 inverter with converter assembly connector.


c.

Disconnect the A31 and A30 hybrid vehicle control ECU assembly connector.


d.

Connect the cable to the negative (-) auxiliary battery terminal.


e.

Turn the power switch on (IG).


f.

Measure the voltage according to the value(s) in the table below.

A556748C03
0.792,0.406 1.188,0.635 0.396,0.229 3.021,0.406 3.417,0.635 0.396,0.229 5.083,0.406 5.479,0.635 0.396,0.229 1.042,1.219 1.458,0.802 true 1.271,1.521 1.833,2.031 true 1.177,1.51 1.406,2.177 true 3.51,1.313 4.063,0.813 true 5.615,1.292 6.073,2.073 true 5.646,1.635 5.354,2.063 true 0.219,0.167 0.531,0.365 0.313,0.198 10 false *a 2.26,0.208 2.573,0.406 0.313,0.198 10 false *b 5.167,0.438 5.49,0.635 0.323,0.198 10 false A30 3.083,0.438 3.406,0.635 0.323,0.198 10 false A31 0.865,0.438 1.188,0.635 0.323,0.198 10 false A87 1.521,0.667 2,0.865 0.479,0.198 10 false HSDN 3.979,0.625 4.458,0.823 0.479,0.198 10 false HSDN 5.083,2.104 5.563,2.302 0.479,0.198 10 false MREL 6.021,2.156 6.5,2.354 0.479,0.198 10 false +B1 1.917,2.094 2.396,2.292 0.479,0.198 10 false +B 1.323,2.219 1.802,2.417 0.479,0.198 10 false +B2
*a Front view of wire harness connector
(to Inverter with Converter Assembly) 		*b Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly)


Standard Voltage:
Tester Connection Condition Specified Condition
A87-6 (HSDN) or A31-9 (HSDN) - Body ground Power switch on (IG) Below 1 V


NOTICE:

Turning the power switch on (IG) with the hybrid vehicle control ECU assembly and inverter with converter assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.



g.

Turn the power switch off.


h.

Disconnect the cable from the negative (-) auxiliary battery terminal.


i.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A87-6 (HSDN) - A87-36 (+B) Power switch off 10 kΩ or higher
A87-6 (HSDN) - A87-35 (+B2) Power switch off 10 kΩ or higher
A31-9 (HSDN) - A30-7 (+B1) Power switch off 10 kΩ or higher
A31-9 (HSDN) - A30-47 (MREL) Power switch off 10 kΩ or higher



j.

Reconnect the A31 and A30 hybrid vehicle control ECU assembly connector.


k.

Reconnect the A87 inverter with converter assembly connector.


Result:
Proceed to
OK
NG



OK

6.CHECK INVERTER WITH CONVERTER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK INVERTER WITH CONVERTER ASSEMBLY
CAUTION:

Be sure to wear insulated gloves.


a.

Check that the service plug grip is not installed.

NOTICE:

After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.



b.

Disconnect the A87 inverter with converter assembly connector.


c.
C410406C03
1.479,1.854 1.031,1.333 true 0.917,1.344 0.542,1.833 true 1.573,0.417 1.219,0.969 true 0.104,0.083 0.417,0.281 0.313,0.198 10 false *a 1.604,0.25 2.219,0.448 0.615,0.198 10 false HSDN 0.354,1.865 0.667,2.063 0.313,0.198 10 false +B 1.479,1.865 1.938,2.063 0.458,0.198 10 false +B2
*a Component without harness connected
(Inverter with Converter Assembly)


Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
6 (HSDN) - 36 (+B) Power switch off 10 kΩ or higher
6 (HSDN) - 35 (+B2) Power switch off 10 kΩ or higher



d.

Reconnect the A87 inverter with converter assembly connector.


Result:
Proceed to
OK
NG



OK

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


NG

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>INVERTER WITH CONVERTER (for AWD)>REMOVAL